231990874 has 48 divisors (see below), whose sum is σ = 399217896. Its totient is φ = 100684800.

The previous prime is 231990853. The next prime is 231990881. The reversal of 231990874 is 478099132.

It can be written as a sum of positive squares in 4 ways, for example, as 153933649 + 78057225 = 12407^2 + 8835^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231990874.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 503004 + ... + 503464.

Almost surely, 2^231990874 is an apocalyptic number.

231990874 is a deficient number, since it is larger than the sum of its proper divisors (167227022).

231990874 is a wasteful number, since it uses less digits than its factorization.

231990874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 231990874 is about 15231.2466331551. The cubic root of 231990874 is about 614.4553081455.

The spelling of 231990874 in words is "two hundred thirty-one million, nine hundred ninety thousand, eight hundred seventy-four".